中国机械工程Issue(17)：2369-2373,5.DOI:10.3969/j.issn.1004132X.2015.17.016
废气再循环冷却器的性能仿真及结构改进研究
Performance Simulation and Structure Improvement of EGR Cooler
摘要
Abstract
The poor working conditions of EGR cooler often is due to excessive thermal load and the emergence of structure crack problem,which influences seriously its actual performance.The fluid field,the temperature and thermal stress distribution of cooler were calculated by using computational fluid dynamics and finite element analysis software with fluid-solid coupling thermal analysis tech-nique.The results of calculation well agree with test data and it is concluded that the cracks on EGR cooler are caused by high thermal stress.Accordingly the cooler structure was improved,the outer surface increased turbulence slots.The cooler with that configuration has obviously lower thermal stress and cracks no longer happen again,indicating fluid-solid coupling thermal analysis being an ef-fective way for solving the crack problem of EGR cooler.关键词
废气再循环冷却器/热应力/流固耦合/扰流槽Key words
exhaust gas recirculation(EGR)cooler/thermal stress/fluid-solid coupling/turbu-lence slots分类
能源科技引用本文复制引用
陆磊,张振东,尹丛勃..废气再循环冷却器的性能仿真及结构改进研究[J].中国机械工程,2015,(17):2369-2373,5.基金项目
国家自然科学基金资助重点项目(51275309) （51275309）
